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2022

Home2022Page 59
(a)  0.002                                               (b)   0.004 (c)   0.008                             ...
(a)  Protonema                        (b)  Prothallus (c)   Proembryo                        (d)  Embryo Ans. a (10)
(a)  Pteridophytes                   (b)  Pines (c)   Monocots                           (d)  Dicots Ans. a (8)
(a)  Gametophyte                    (b)  Sporophyte (c)   Both (a) and (b)               (d)  None of these Ans. b (11)
(a)  Total Energy                      (b)  K.E. (c)   Angular Velocity               (d)  Linear Momentum Answer: a (11)
(a)  Peristome teeth                (b)  Annulus (c)   Calyptra                             (d)  Operculum Ans. a (7)
(a)      Potential energy                       (b)  Kinetic energ (c)           Linear momentum           (d)          Angular momentum Answer:D (11)
(a)  Keplers law of areas still holds (b)  Keplers law of period still holds (c)   Keplers law of areas and...
(a)      Tangential velocity is constant (b)  Angular velocity is constant (c)   Radial velocity is constant (d)  Areal velocity is constant...
(a)      Work energy theorem (b)  Conservation of linear momentum (c)   Conservation of angular momentum (d)  Conservation of energy Answer: c...
(a)      1.38                   (b)    1.383/2 (c)   1.381/2             ...
(a)   T2 ∞ R3             (b)     T3 ∞ R2 (c)  T2 ∞  (1/R3 )   ...
(a)  16 L                                    (b)  64 L (c)   L/4                         ...
(a)  4.2 years                            (b)  2.8 years (c)   5.6 years                            (d)  8.4 years Answer: b (9)
(a)  A                                         (b)  B (c)   C                                         (d)  D Answer: c (14)
(a)  The time taken in travelling DAB is less than that for BCD (b)  The time taken in travelling DAB...
(a)  53/2 years                        (b) 52/3years (c)  51/3  years                        (d)  51/2 years Answer: a (6)
(a)  Spirogyra                           (b)  Mucor (c)   Moss                                   (d)  Both (b) and (c) Ans. c (14)
(a)  Copernicus                        (b)  Kepler (c)   Galileo                                (d)  None Answer: A (7)
(a)  1                                         (b)  2 (c)   3                                         (d)  4 Ans. b (6)
A satellite of mass m is circulating around the earth with constant angular velocity. If radius of the orbit is...
The largest and the shortest distance of the earth from the sun  are r1 and r2 , its distance from...
Two planets move around the sun. The periodic times and the mean radii of the orbits are  T1 , T2and...
A copper wire of length 4.0m and area of cross-section 1.2 cm2 is stretched with a force of 4.8×103N. If...
A planet moves around the sun. At a given point P, it is closest from the sun at a distance...
If the interatomic spacing in a steel wire is 3.0Å and  Ysteel =20×1010 N/m2   then force constant is (a) 6×10-2...
The earth revolves about the sun in an elliptical orbit with mean radius  9.3 × 107 in a period of...
c HCl molecule about an axis passing through its centre of mass and perpendicular to the line joining the H+...
The distance of neptune  1013 and  1012 saturn from sun are nearly  and  meters respectively. Assuming that they move in circular...
If g ∞ 1/R 3 (instead of 1/R2) , then the relation between time period of a satellite near earth’s surface...
When a satellite going round the earth in a circular orbit of radius r and speed v loses some of...
In planetary motion the areal velocity of position vector of a planet depends on angular velocity (ω)  and the distance...
Two planets at mean distance d1 and d2  from the sun and their frequencies are n1 and n2 respectively then Answer:...
(a)  Antheridia                         (b)  Capsule (c)   Protonema                        (d)  Archegonium Ans. d (8)
(a)  Hydrophobic                     (b)  Sensitive to touch (c)   Hygroscopic                       (d)  None of the above Ans. c (8)
Potential energy of a satellite having mass ‘m’ and rotating at a height of  6.4 × 106m from the earth...
A satellite with kinetic energy Ek  is revolving round the earth in a circular orbit. How much more kinetic energy...
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